<template>
  <div>
    <div class="search">
      <input type="text" v-model="keyword" class="search-input" placeholder="输入城市名或拼音">
    </div>
    <div class="search-content" v-show="keyword" ref="search">
      <ul>
        <li
          class="search-item border-topbottom"
          v-for="item of list" :key="item.id"
          @click="handleCityClick(item.name)"
        >
          {{item.name}}
        </li>
        <li v-show="noData" class="search-item border-bottom">没有匹配数据</li>
      </ul>
    </div>
  </div>
</template>

<script>
import { mapMutations } from 'vuex'
// import Bscroll from 'better-scroll'
export default {
  name: 'CitySearch',
  props: {
    cities: Object
  },
  data () {
    return {
      keyword: '',
      list: [],
      timer: null
    }
  },
  methods: {
    // 搜索框结果div点击时触发事件
    // 通过 mutations
    handleCityClick (city) {
      // this.$store.commit('changeCity', city)
      this.$router.push('/')
      this.changeCity_Mutations(city)
    },
    ...mapMutations(['changeCity_Mutations'])
  },
  watch: {
    keyword () {
      if (this.timer) {
        clearTimeout(this.timer)
      }
      if (!this.keyword) {
        this.list = []
        return
      }
      this.timer = setTimeout(() => {
        const result = []
        for (let i in this.cities) {
          this.cities[i].forEach((value) => {
            if (value.spell.indexOf(this.keyword) > -1 || value.name.indexOf(this.keyword) > -1) {
              result.push(value)
            }
          })
        }
        this.list = result
      }, 100)
    }
  },
  // mounted () {
  //   this.scroll = new Bscroll(this.$refs.search)
  // },
  computed: {
    noData () {
      return !this.list.length
    }
  }
}
</script>

<style lang="stylus" scoped>
@import '~styles/varibles.styl'
.search {
  height: .72rem
  padding: .1rem
  background: $bgColor
  .search-input {
    box-sizing: border-box
    width: 100%
    height: .62rem
    line-height: .62rem
    text-align: center
    color: #666
    padding: 0 .1rem
    border-radius: .06rem
  }
}
.search-content {
  z-index: 1
  position: absolute
  top: 1.78rem
  left: 0
  right: 0
  bottom: 0
  background: #eee
  .search-item {
    line-height: .62rem
    background: #fff
    color: #666
    padding-left: .1rem
  }
}
</style>
